Hertz, H. R., Lenard, P., Jones, D. E., Walley, J. T., & Helmholtz, H. v. (1899). The principles of mechanics presented in a new form. Macmillian and Co..
Lua i Stíl Chicago (17ú heag.)Hertz, Heinrich Rudolph, Philipp Lenard, Daniel Evan Jones, John Thomas Walley, agus Hermann von Helmholtz. The Principles of Mechanics Presented in a New Form. London, New York: Macmillian and Co., 1899.
Lua MLA (8ú heag.)Hertz, Heinrich Rudolph, et al. The Principles of Mechanics Presented in a New Form. Macmillian and Co., 1899.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.